Yam hi organic fertilizer, from sowing until the hair tree can be paved, the number of applications is not limited, can be more than appropriate Shi. However, yam is more delicate and inefficient use of organic fertilizer may cause dark spots, insect eyes or birthing of yams, affecting quality and product performance. The application of organic manure to yam should be: 1. According to the nature of the soil, organic manure with different textures, such as organic manure and sheep manure, should be selected for coarse and loose, organic matter content is high, and it is easily fermented and decomposed, and it is effective when applied to low temperature or viscous soil. Cow manure, pig manure and other organic matter content is small, the organization is fine, the water is more, the fermentation is decomposed slowly, the effect is slow, and the effect is good in the sandy soil or sandy loamy soil. Different textures of organic fertilizers and soils are scientifically matched, which can both exert fertilizer effect and improve soil texture. 2. Before the application of organic fertilizers, the organic fertilizers that are fully fermented and decomposed without being fermented and decomposed must be subjected to weeds and various pests and diseases, which may easily cause damage to the yam tubers. At the same time, fermented and unfermented organic fertilizers are applied to the field and then fermented. During fermentation, heat is generated and oxygen in the soil is consumed in large amounts, affecting the normal growth of the yam root system, especially the tip tissue of the tuber is soft, and the fecal masses will burn out. Affects the vertical extension of the meristem of the stem. 3, to avoid the application of granular organic fertilizer cultivation of yam shop applied organic fertilizer should be a uniform powdery product, containing organic fertilizer into the soil after the fecal block, yam tuber tip hit the fecal block, then cause the childbirth or even dehydration Necrosis.
Excerpted from China Agricultural Press>
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